Air-blast-heating oven



(No Model.)

Aj.. PEGKHAM. AIR BLAST HEATING OVEN. No. 343,061'. I 4Patented June 1,1886.v

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UNITED STATES PATENT OFT-ien.

EDGAR PECKHAM, OF SYRACUSE, NElV YORK.

AIR-BLAST-H EATING OVEN.

SPECIFICATION forming part of Letters Patent No. 343,061, dated June 1,1886.

Application tiled March 14, 1.51514. Renewed April 17, 1886. SerialNo.199,2l1. (No model.)

To all whom it may concern.'

Be it known that I, EDGAR PECKHAM, of Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Air-Blast-Heating Ovens, of which the following, takenin counection with the accompanying drawings, is a full, clear, andexact description.

This invention consists, first. in the coinbination, with a furnace or aCatalan forge tire, of a horizontally-prolonged tortuous iii-e flue, andan air-blast oven arranged horizontally across said ue, whereby their-blast is heated in a simple, effective, and economical manner; and,secondly, in certain novel devices for commingling the heated air withthe gases generated in the lire-box of the furnace, so as to produceperfect combustion of said gases, all as hereinafter more fullydescribed, and specifically set forth in the claims.

In the annexed drawings, Figure 1 is a longitudinal section of aheatingfurnace with my invention connected therewith. Fig. 2 is ahorizontal section on line x x, Fig. l. Fig. 3 is a vertical transversesection on line y y, Fig. l; and Figs. 4 and 5are longitudinal andtransverse sections of a Catalan forge-fire provided with my invention.

Similar letters of reference indicate corresponding parts.

A represents the exit lire tlue of a furnace, B, such as a puddling orheating furnace or forge-iire, from which usually a great amount of heatescapes through the aforesaid lueand is thus wasted. In order to utilizethis heat in a simple, economical,and effective manner, I horizontallyprolong the flue A, and extend horizontally through the same a tortuousor sinuous air -blast duct or pipe, G, which conveys the hot-blast tothe furnace or its combustion-chamber to supply the fire with heatedoxygen and thus produce perfect combustion.

In construct-ing the aforesaid air-blast-heating oven I prefer toarrange the fire-fines A in two or more seriis in different horizontalplanes and the air-ducts O in horizontal planes between the planes oftheflues A, and running respectively parallel one directly over or underthe other, as shown in Fig. 3 of the drawings, so that the air-ducts areuninterruptedly joint, as shown.

iu'ipinged by the heat passing through the tlues A. When the oven is tobe constructed wholly of lire-brick, I usually employ brick fittedtoeach other by a tongue-and-groove Vhen iron pipes are desired for theairduct and the oven is to be arranged near the source of heat or nearthe furnace or forge-fire, as represented in Figs. 4 and 5 of thedrawings, I inclose said pipes in a irebrick chamber or case, D,provided on its under side with ports a a for the admission of the heatinto said chamber, the ingress thereof being regulated by removablecovers or dampers b b, as shown. The chamber D,form' ing a dead airspace, protects the pipes from excessive heat.

S represents the stack, arranged at or near the junction of the tortuousiiue kA with the furnace B,'and A is a iiue connecting the furnacedirect with the stack, and provided with a damper, d, by the opening orremoval of which the products of combustion are diverted from theto'rtuous iiue A and allowed to escape directthrough the stack. This isdone whenever it is desired to cool the hot-blast oven for repairs orother purposes.

Between the fire-box E and furnace B,I erect two bridge-Walls, G G, witha space between them. Across the upper part of this space I build ahot-blast disseminator, F, in the form of reticulated brick-work,underneath which is arranged the discharge end of the hot-blast pipe C,as shown in Fig. l of the drawings.

Over` the disseminator I arrange a nre-deilector, e, in the form of aprojection from the roof of the furnace. The deiiection of the firedirectly over the ascending disseminated hot-blast serves to thoroughlyintermix the' latter with the heated gases and thus promote thecombustion of the same.

I am aware that tortuous passages have been formed for escaping productsof combustion, and that fresh air heated in such passages has beencarried back to be injected into such products near thecombustion-chamber. Such features, broadly, are not sought to be coveredin this application.

What I claim as new is- 1. The combination, with the combustion-`chamber E, tortuous passages A, stack S,and direct passage A',controlled by a valve, d,

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the air-blast pnssnges C, nearly surrounded by In testimony whereof[havcherennto signed the passages A, and the passage C', terminabmy nameand affixed my scarl, in the presence ing and delivering thc hot airnear the com- I ofbwo attesting Witnesses, at) Syracuse, in the x5bnstion-chamber, substantially as described. county of Onondaga. inlille State of New 5 2. The combination, with the combustion- York, thislst day of March, 1884.

chamber E, the two bridge-walls, G G, and deflector e,l of Iche torbnouspassage A, sta-ek S, EDG-AR PECKHAM. [L s] direct passage A', controlledby valve d, the tortuons air-blast pipes C, arranged as shown,Witnesses: xo the hob nir passage G, and the disseminntor C. H. DUELL,F, all combined and arranged to serve as and (.3. BENDIXON.

for t-lle purpose seb forth.

